Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 461
Alerts This Week
Warning Icon 1 461

Ubuntu 14.04 LTS USN-3019-1 Critical: Linux Kernel DoS and Leaks

ubuntu
Calendar Grey June 27, 2016
Scroller Ubuntu
Tackling vulnerabilities in Ubuntu through the Linux kernel; concerns encompass Denial of Service (DoS) attacks and data breaches necessitating patches.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-utopic: Linux hardware enablement kernel from Utopic for Trusty

Details:

Jesse Hertz and Tim Newsham discovered that the Linux netfilter

implementation did not correctly perform validation when handling 32 bit

compatibility IPT_SO_SET_REPLACE events on 64 bit platforms. A local

unprivileged attacker could use this to cause a denial of service (system

crash) or execute arbitrary code with administrative privileges.

(CVE-2016-4997)

Kangjie Lu discovered an information leak in the core USB implementation in

the Linux kernel. A local attacker could use this to obtain potentially

sensitive information from kernel memory. (CVE-2016-4482)

Jann Horn discovered that the InfiniBand interfaces within the Linux kernel

could be coerced into overwriting kernel memory. A local unprivileged

attacker could use this to possibly gain administrative privileges on

systems where InifiniBand related kernel modules ar...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory information leak critical DoS update instructions ubuntu linux kernel

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 LTS:
  linux-image-3.16.0-76-generic   3.16.0-76.98~14.04.1
  linux-image-3.16.0-76-generic-lpae  3.16.0-76.98~14.04.1
  linux-image-3.16.0-76-lowlatency  3.16.0-76.98~14.04.1
  linux-image-3.16.0-76-powerpc-e500mc  3.16.0-76.98~14.04.1
  linux-image-3.16.0-76-powerpc-smp  3.16.0-76.98~14.04.1
  linux-image-3.16.0-76-powerpc64-emb  3.16.0-76.98~14.04.1
  linux-image-3.16.0-76-powerpc64-smp  3.16.0-76.98~14.04.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

https://ubuntu.com/security/notices/USN-3019-1

CVE-2016-4482, CVE-2016-4565, CVE-2016-4569, CVE-2016-4578,

CVE-2016-4580, CVE-2016-4913, CVE-2016-4997, CVE-2016-4998

Severity
critical
Lowest
Low
Medium
High
Critical

June 27, 2016

Topics%20covered

Topics Covered

security advisory information leak critical DoS update instructions ubuntu linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-76.98~14.04.1

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.